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Bottomley" , "Martin K. Petersen" , linux-kernel@vger.kernel.org (open list) Subject: [PATCH 1/3] scsi: bnx2fc: simplify allocation of cmgr Date: Thu, 30 Apr 2026 14:02:43 -0700 Message-ID: <20260430210245.29840-2-rosenp@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260430210245.29840-1-rosenp@gmail.com> References: <20260430210245.29840-1-rosenp@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Switch to flexible array member for cmds so that all members can be referenced properly instead of using + 1 hacks. Allocate io_bdt_pool, free_list, and free_list_lock with the struct to avoid separate kfrees. Remove mem_size variable. It's just open coding kzalloc_objs. Signed-off-by: Rosen Penev --- drivers/scsi/bnx2fc/bnx2fc.h | 2 +- drivers/scsi/bnx2fc/bnx2fc_io.c | 52 +++++---------------------------- 2 files changed, 9 insertions(+), 45 deletions(-) diff --git a/drivers/scsi/bnx2fc/bnx2fc.h b/drivers/scsi/bnx2fc/bnx2fc.h index 8c8968ec8cb4..30d8b563db0c 100644 --- a/drivers/scsi/bnx2fc/bnx2fc.h +++ b/drivers/scsi/bnx2fc/bnx2fc.h @@ -281,7 +281,7 @@ struct bnx2fc_cmd_mgr { struct list_head *free_list; spinlock_t *free_list_lock; struct io_bdt **io_bdt_pool; - struct bnx2fc_cmd **cmds; + struct bnx2fc_cmd *cmds[]; }; struct bnx2fc_rport { diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c index 9c7a541a4523..4810999976b6 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_io.c +++ b/drivers/scsi/bnx2fc/bnx2fc_io.c @@ -214,7 +214,6 @@ struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba) struct io_bdt *bdt_info; struct bnx2fc_cmd *io_req; size_t len; - u32 mem_size; u16 xid; int i; int num_ios, num_pri_ios; @@ -231,8 +230,10 @@ struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba) BNX2FC_MISC_DBG("min xid 0x%x, max xid 0x%x\n", min_xid, max_xid); num_ios = max_xid - min_xid + 1; - len = (num_ios * (sizeof(struct bnx2fc_cmd *))); - len += sizeof(struct bnx2fc_cmd_mgr); + len = struct_size(cmgr, cmds, num_ios); + len += sizeof(*cmgr->io_bdt_pool) * num_ios; + len += sizeof(*cmgr->free_list) * arr_sz; + len += sizeof(*cmgr->free_list_lock) * arr_sz; cmgr = kzalloc(len, GFP_KERNEL); if (!cmgr) { @@ -241,21 +242,9 @@ struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba) } cmgr->hba = hba; - cmgr->free_list = kzalloc_objs(*cmgr->free_list, arr_sz); - if (!cmgr->free_list) { - printk(KERN_ERR PFX "failed to alloc free_list\n"); - goto mem_err; - } - - cmgr->free_list_lock = kzalloc_objs(*cmgr->free_list_lock, arr_sz); - if (!cmgr->free_list_lock) { - printk(KERN_ERR PFX "failed to alloc free_list_lock\n"); - kfree(cmgr->free_list); - cmgr->free_list = NULL; - goto mem_err; - } - - cmgr->cmds = (struct bnx2fc_cmd **)(cmgr + 1); + cmgr->io_bdt_pool = (struct io_bdt **)(cmgr->cmds + num_ios); + cmgr->free_list = (struct list_head *)(cmgr->io_bdt_pool + num_ios); + cmgr->free_list_lock = (spinlock_t *)(cmgr->free_list + arr_sz); for (i = 0; i < arr_sz; i++) { INIT_LIST_HEAD(&cmgr->free_list[i]); @@ -291,17 +280,8 @@ struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba) io_req++; } - /* Allocate pool of io_bdts - one for each bnx2fc_cmd */ - mem_size = num_ios * sizeof(struct io_bdt *); - cmgr->io_bdt_pool = kzalloc(mem_size, GFP_KERNEL); - if (!cmgr->io_bdt_pool) { - printk(KERN_ERR PFX "failed to alloc io_bdt_pool\n"); - goto mem_err; - } - - mem_size = sizeof(struct io_bdt); for (i = 0; i < num_ios; i++) { - cmgr->io_bdt_pool[i] = kmalloc(mem_size, GFP_KERNEL); + cmgr->io_bdt_pool[i] = kmalloc_obj(struct io_bdt); if (!cmgr->io_bdt_pool[i]) { printk(KERN_ERR PFX "failed to alloc " "io_bdt_pool[%d]\n", i); @@ -343,10 +323,6 @@ void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr) num_ios = max_xid - min_xid + 1; - /* Free fcoe_bdt_ctx structures */ - if (!cmgr->io_bdt_pool) - goto free_cmd_pool; - bd_tbl_sz = BNX2FC_MAX_BDS_PER_CMD * sizeof(struct fcoe_bd_ctx); for (i = 0; i < num_ios; i++) { bdt_info = cmgr->io_bdt_pool[i]; @@ -364,16 +340,6 @@ void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr) cmgr->io_bdt_pool[i] = NULL; } - kfree(cmgr->io_bdt_pool); - cmgr->io_bdt_pool = NULL; - -free_cmd_pool: - kfree(cmgr->free_list_lock); - - /* Destroy cmd pool */ - if (!cmgr->free_list) - goto free_cmgr; - for (i = 0; i < num_possible_cpus() + 1; i++) { struct bnx2fc_cmd *tmp, *io_req; @@ -383,8 +349,6 @@ void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr) kfree(io_req); } } - kfree(cmgr->free_list); -free_cmgr: /* Free command manager itself */ kfree(cmgr); } -- 2.54.0